Hiya! Thank you very much for your kind words, I really appreciate them! I hope you had a great time playing my VN so far.
Likewise, I'm very grateful for your detailed suggestion. Indeed, I'm planning to include something along those lines in future stages of the writing, although it probably won't be as blunt as that. Instead of something overtly netorare, I plan to make subtle twists in the plot, which will suggest that some of the girls can be involved in some sort of potential romance, or something vaguely related. Love letters, suspicious sightings... Naoto's nature isn't very jealous to begin with, but these subtle details are meant to make him strangely restless in the innermost recesses of his mind, something that I believe will be much more effective as a dramatic resource than plain netorare. I won't reveal anything else, of course, because I don't want to spoil things, but in fact, the Spanish version already includes a couple of these ingredients.
Again, thank you very much for your message, and feel free to make any other comments or suggestions you come up with. I always welcome them, and hope to keep doing my best to answer the players tastes. See you!